A fluid dynamics study focusing on wall shear rates within the Penn State 12 CC pulsatile pediatric ventricular assist device: A comparison of mechanical heart valve types

Benjamin T. Cooper, Breigh N. Roszelle, Tobias C. Long, Steven Deutsch, Keefe B. Manning

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Previous studies have shown that the interrelated flow characteristics necessary for the prevention of thrombosis in a pulsatile ventricular assist device (VAD) are a strong inlet jet, a late diastolic recirculating flow, and adequate wall washing (greater than 500 s-1). Particle image velocimetry was used to compare the flow fields in the chamber of the 12 cc Penn State pediatric pulsatile VAD using two valves: Björk-Shiley Monostrut (BSM) tilting-disc valves at the inlet and outlet and Carbomedics (CM) bi-leaflet valves at the inlet and outlet. In conjunction with the flow evaluation, wall shear data were calculated and analyzed to help to quantify wall washing. The major orifice inlet jet of the device containing BSM valves was more intense which led to better circulation and wall washing than the three jets produced by the CM valves Regurgitation through the CM valve was observed and served as a significant hindrance to the development of the rotational flow.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Summer Bioengineering Conference 2007, SBC 2007
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages679-680
Number of pages2
ISBN (Print)0791847985, 9780791847985
DOIs
StatePublished - 2007
Event2007 ASME Summer Bioengineering Conference, SBC 2007 - Keystone, CO, United States
Duration: Jun 20 2007Jun 24 2007

Publication series

NameProceedings of the ASME Summer Bioengineering Conference 2007, SBC 2007

Other

Other2007 ASME Summer Bioengineering Conference, SBC 2007
CountryUnited States
CityKeystone, CO
Period6/20/076/24/07

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Mechanical Engineering

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    Cooper, B. T., Roszelle, B. N., Long, T. C., Deutsch, S., & Manning, K. B. (2007). A fluid dynamics study focusing on wall shear rates within the Penn State 12 CC pulsatile pediatric ventricular assist device: A comparison of mechanical heart valve types. In Proceedings of the ASME Summer Bioengineering Conference 2007, SBC 2007 (pp. 679-680). (Proceedings of the ASME Summer Bioengineering Conference 2007, SBC 2007). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/sbc2007-175441